Tube Insert (Imperial)

Tube insert
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Creates a rigid connection when fitting soft pipe materials to a John Guest or compression fitting.

Always use a John Guest tube insert when using soft pipe or connecting to a compression fitting. Inserts play a vital role in providing extra support to pipework, ensuring that the ends of the pipe are kept nice and round, and minimising any loss of shape that can occur when cutting. Designed and manufactured in the UK.

Features and benefits

  • Enhances sealing for a securer connection
  • Maintains structural integrity of the pipe connection
  • Helps make the pipe more rigid when a side load is applied
  • Suitable for air and pneumatics, hot and cold water, and central heating applications
  • Compatible with soft metal or plastic pipe/tubing


BSI Thermo Pipes and Fixings accredited
SKUDescriptionPipe OD ″Pipe ID ″Quantity per bagQuantity per boxAccreditations
TSI250STube Insert 3⁄8″ OD X 1⁄4″ ID3⁄81⁄4501000 & 20000
TSI312STube Insert 7⁄16″ OD X 5⁄16″ ID7⁄165⁄161000
TSI375STube Insert 1⁄2″ OD X 3⁄8″ ID1⁄23⁄8501000